Mukeshs brother and the years biggest gainer, Anil Ambani, is in sixth place with a fortune of 42 billion dollars.

Next comes the worlds richest real estate baron, K. P. Singh, who is in eighth place with a worth of 30 billion dollars.

Riding the surging price of Berkshire Hathaway stock, Buffett has seen his fortune swell to an estimated 62 billion dollars, up 10 billion dollars from a year ago.

Bill Gates, who is now worth 58 billion dollars, is ranked third in the world.

Mexican telecom tycoon Carlos Slim Helu with an estimated net worth of 60 billion dollars is in second place.

Among Indians, Essar groups Shashi and Ravi Ruia at 43 rd rank globally with a combined net worth of 15 billion dollars, Wipros Azim Premji (60th with 12.7 billion dollars), Sunil Mittal and family (64th with 11.8 billion dollars) and Kumar Birla (76th with 10.2 billion dollars) have also made it into the list. (ANI)